From 32ce3a43190180f11ecbac1a394022331274fdd2 Mon Sep 17 00:00:00 2001
From: Raphael Michel <mail@raphaelmichel.de>
Date: Mon, 27 May 2019 23:04:13 +0200
Subject: [PATCH] Event list: Ignore invalid filter attributes

---
 src/pretix/presale/views/organizer.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/pretix/presale/views/organizer.py b/src/pretix/presale/views/organizer.py
index 62f5527ed..04818985f 100644
--- a/src/pretix/presale/views/organizer.py
+++ b/src/pretix/presale/views/organizer.py
@@ -69,7 +69,9 @@ def filter_qs_by_attr(qs, request):
                 property__name=attr,
             )
 
-        prop = props[attr]
+        prop = props.get(attr)
+        if not prop:
+            continue
         annotations = {'attr_{}'.format(i): Exists(emv_with_value)}
         if qs.model == SubEvent:
             annotations['attr_{}_sub'.format(i)] = Exists(semv_with_value)